Longevity of motor on EVTamerica Z-20

Can anyone give an educated guess of how long the motor will likely last in the Z-20? I am currently on the waiting list. I would love to get 45mph speed, but worry about the brushed motor. I don't want to drop two and half grand and only get a few to several thousand miles before being stuck permanently or forced to buy a new motor at probably several hundred dollars. The company has been unresponsive when I have asked questions to this effect. I have specifically inquired about the availability and possible cost of services to the motor for things like brush replacements and cleanings. I guess a brushless motor probably was not used to save cost especially on the controller to get a lower introductory price on the Evtamerica Z20.

Depends ... on the EVT 4000 it's not terribly hard to open the motor and clean it out. You have to get past the fact the motor is marked with "DO NOT SERVICE" on the outside ... Getting replacement brushes for the EVT 4000 is a different story as EVT doesn't sell replacement brushes. I do understand that electricmotorsport.com has replacement brushes available.

The Z-20 is imported by EVT America and despite the EVT in their name, the Z-20 seems to not be made by the EVT company in Taiwan. EVT America got its start in importing from EVT Taiwan and I think they still sell vehicles from them, but the Z-20, based on what I've gathered from reading their press releases etc over the last 2+ years, is made by some other company than EVT Taiwan.

There are plenty of chinese companies making scooter frames and other scooter parts and EVT America could easily have gotten frames from any of those suppliers.

I don't have experience with EVT motors, but I have opened a brushed hubmotor. The YongKang Crown hubmotor was clearly not intended to be "openable," but since it was making awful clacking noises (when I got it at ~150 Km), something had to be done. I scribed "truth marks" on the case to ensure the parts returned to their original placement. After prying it apart, I added 4 tapped holes for jackscrews for the "next time." There was a challenge on re-assembly, as the magnets have an IMMENSE force on the stator while you're slipping it in place. I used a car jack to lower it in place the first time.

After 1000Km, I re-opened the motor. The moderate brush dust inside (and the discoloration pattern on the comm) was diagnosed by a motor expert as a sign of overloading - something that's easy to believe given my weight and (hilly) neighborhood. If the brushes do wear out before I'm tired of it, I'll just cut some down from another brand's brushes- there's nothing "proprietary" in brush design aside from the dimensions.

Unfortunately, as efficient, practical, convenient, earth-saving and fun as we find electric scooters to be, the US importers regard them almost as toys and treat them as such. Would you expect to get parts or service for a toddler-size battery-electric toy Hummer H2?

Kasea, in particular makes all their money off cheap Chinese ATV quads which sell like crazy. The ZE1500 and 2000's barely earn their keep on the ship from China.

And, dealers likewise concentrate their business on bicycle kits and segways, and few make much effort to get better support.

Its funny how economics dictate the world around us. Almost every facet of your life has in some way shape or form to do with money and its acquisition. Take a look at my latest post on zero point energy. Interesting stuff